US4363783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for specimen treatment
Assignee: C Reichert Optische Werke AG
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Filing: 1981-10-30
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Granted: 1982-12-14
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Expires: 2001-10-30
Abstract
Abstract Apparatus for fixation, dessication, and embedding of biologic specimens for microscopic, especially electron microscopic studies having compartment for treating specimens held in liquid permeable specimen holders, a supply of treatment liquid connected to the compartment, to introduce liquid from the supply, and remove liquid from the compartment, a chamber (14c) in the compartment for holding a quantity of fluid, a passage connected to the chamber, pump (15) located in the chamber for moving fluid through the passage, at least one tubular cell (14a) for supporting a plurality of specimen holders (10, 10a) is an end to end relationship, one end of said cell being connected to said passage, the other end of each of said chamber and said cell being connected to a common portion of said tank to permit liquid to be circulated by said pump.
Inventors
- 👤 Hellmuth Sitte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/30; G01N1/31; G01N1/42; G01N2001/315
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
In apparatus for fixation, dessication, and embedding of biologic specimens for microscopic, especially electron microscopic studies, having a compartment for treating specimens held in liquid permeable specimen holders, a supply of treatment liquid, means connecting the supply to said compartment, and means to introduce liquid from the supply, and remove liquid from the compartment, the improvement comprising a chamber (14c) in said compartment for holding a quantity of fluid, a passage connected to said chamber, pump means (15) located in said chamber for moving fluid through said passage, at least one tubular cell (14a) for supporting a plurality of specimen holders (10, 10a) in an end to end relationship, one end of said cell being connected to said passage, the other end of each of said chamber and said cell being connected to a common portion of said tank to permit liquid to be circulated by said pump means.
Claim 2
Dependent Claim
149 words
In apparatus for fixation, dessication, and embedding of biologic specimens for microscopic, especially electron microscopic studies, having a compartment for treating specimens held in liquid permeable specimen holders, a supply of treatment liquid, means connecting the supply to said compartment, and means to introduce liquid from the supply, and remove liquid from the compartment, the improvement comprising a chamber (14c) in said compartment for holding a quantity of fluid, a passage connected to said chamber, pump means (15) located in said chamber for moving fluid through said passage, at least one tubular cell (14a) for supporting a plurality of specimen holders (10, 10a) in an end to end relationship, one end of said cell being connected to said passage, the other end of each of said chamber and said cell being connected to a common portion of said tank to permit liquid to be circulated by said pump means.
Claim 3
Dependent Claim
12 words
The improvement of claim 1 having a plurality of cells (14a, 14b).
Claim 4
Dependent Claim
20 words
The improvement of claim 2 wherein said tubular cells and said chamber constitute an integral unit removable from said compartment.
Claim 5
Dependent Claim
45 words
The improvement of claim 1 wherein a cylindrical body (13b, 13d, 13e, 13g) has a plurality of cells (14a, 14b, 14d, 14e) forming parallel cylindrical passages through said cylindrical body and said chamber is a cylindrical passage parallel to said cells in said cylindrical body.
Claim 6
Dependent Claim
23 words
The improvement of claim 4 wherein said passage is formed between one end of said cylindrical body and one end of said compartment.
Claim 7
Dependent Claim
26 words
The improvement of claim 3 further including means (10b) for displacing liquid from all but a small passage of a portion of at least one cell.
Claim 8
Dependent Claim
15 words
The improvement of claim 1 further including means to control the temperature of said compartment.
Claim 9
Dependent Claim
27 words
The improvement of claim 1 wherein said pump means includes an impeller located in said chamber and motor means external to said tank connected to said impeller.
Claim 10
Dependent Claim
24 words
The improvement of claim 8 further including means for varying the speed of said motor whereby the circulation rate of the liquid is variable.
Claim 11
Dependent Claim
10 words
The improvement of claim 9 wherein said motor is reversible.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-13 | 1986-06-14 | 1986-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-13 | 1990-06-14 | 1990-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-13 | 1994-06-14 | 1994-12-14 | $7700.00 | Window Closed / Lapsed |